<!doctype html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
  <meta name="apple-mobile-web-app-capable" content="yes">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <title>photoswipe的使用</title>
  <!-- <link rel="stylesheet prefetch" href="./css/photoswipe.css"> -->
  <link rel="stylesheet" href="./css/photoswipe.css">
  <!-- <link rel="stylesheet prefetch" href="./css/draft-skin.css"> -->
  <link rel="stylesheet" href="./css/draft-skin.css">
  <!-- <script src="./js/photoswipe.js"></script> -->
  <script src="./js/photoswipe.min.js"></script>
  <!-- <script src="js/photoswipe-ui-default.min.js"></script> -->
  <script src="./js/photoswipe-ui-default.min.js"></script>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    .clearfix::before,
    .clearfix::after {
      display: block;
      content: '';
      visibility: hidden;
      height: 100%;
      clear: both;
    }

    body {
      padding-top: 2%;
    }

    .my-gallery {
      width: 96%;
      margin: 0 auto;
    }

    .my-gallery .img-dv {
      width: 100%;
      margin-bottom: 1%;
    }

    .my-gallery .img-dv a {
      display: block;
      width: 100%;
      text-align: center
    }

    .my-gallery .img-dv a img {
      width: 100%;
    }
  </style>
</head>

<body>
  <!--如果有多个data-pswp-uid 它的值是不能重复的-->
  <div class="my-gallery" data-pswp-uid="1">
    <figure>
      <div class="img-dv"><a
          href="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"
          data-size="1920x1080"><img
            src="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"></a></div>
      <figcaption style="display:none;">在这里可增加图片描述</figcaption>
    </figure>
    <figure>
      <div class="img-dv"><a
          href="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"
          data-size="1920x1080"><img
            src="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"></a></div>
      <figcaption style="display:none;">在这里可增加图片描述</figcaption>
    </figure>
    <figure>
      <div class="img-dv"><a
          href="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"
          data-size="1920x1080"><img
            src="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"></a></div>
      <figcaption style="display:none;">在这里可增加图片描述</figcaption>
    </figure>
    <figure>
      <div class="img-dv"><a
          href="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"
          data-size="1920x1080"><img
            src="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"></a></div>
      <figcaption style="display:none;">在这里可增加图片描述</figcaption>
    </figure>
    <figure>
      <div class="img-dv"><a
          href="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"
          data-size="1920x1080"><img
            src="https://pic4.zhimg.com/80/v2-7fbdb98c77a0efd4de69c05dfaa7fdd9_720w.jpg?source=1940ef5c"></a></div>
      <figcaption style="display:none;">在这里可增加图片描述</figcaption>
    </figure>
  </div>

  <div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
    <div class="pswp__bg"></div>
    <div class="pswp__scroll-wrap">
      <div class="pswp__container">
        <div class="pswp__item"></div>
        <div class="pswp__item"></div>
        <div class="pswp__item"></div>
      </div>
      <div class="pswp__ui pswp__ui--hidden">
        <div class="pswp__top-bar">
          <div class="pswp__counter"></div>
          <button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
          <!--<button class="pswp__button pswp__button--share" title="Share"></button>-->
          <button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>
          <button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>
          <div class="pswp__preloader">
            <div class="pswp__preloader__icn">
              <div class="pswp__preloader__cut">
                <div class="pswp__preloader__donut"></div>
              </div>
            </div>
          </div>
        </div>
        <div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
          <div class="pswp__share-tooltip"></div>
        </div>
        <button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)">
        </button>
        <button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)">
        </button>
        <div class="pswp__caption">
          <div class="pswp__caption__center"></div>
        </div>
      </div>
    </div>
  </div>
</body>
<script type="text/javascript">
  var initPhotoSwipeFromDOM = function (gallerySelector) {
    // 解析来自DOM元素幻灯片数据（URL，标题，大小...）
    var parseThumbnailElements = function (el) {
      var thumbElements = el.childNodes,
        numNodes = thumbElements.length,
        items = [],
        figureEl,
        linkEl,
        size,
        item,
        divEl;
      for (var i = 0; i < numNodes; i++) {
        figureEl = thumbElements[i]; // <figure> element
        // 仅包括元素节点
        if (figureEl.nodeType !== 1) {
          continue;
        }
        divEl = figureEl.children[0];
        linkEl = divEl.children[0]; // <a> element
        size = linkEl.getAttribute('data-size').split('x');
        // 创建幻灯片对象
        item = {
          src: linkEl.getAttribute('href'),
          w: parseInt(size[0], 10),
          h: parseInt(size[1], 10)
        };
        if (figureEl.children.length > 1) {
          item.title = figureEl.children[1].innerHTML;
        }
        if (linkEl.children.length > 0) {
          // <img> 缩略图节点, 检索缩略图网址
          item.msrc = linkEl.children[0].getAttribute('src');
        }
        item.el = figureEl; // 保存链接元素 for getThumbBoundsFn
        items.push(item);
      }
      return items;
    };

    // 查找最近的父节点
    var closest = function closest(el, fn) {
      return el && (fn(el) ? el : closest(el.parentNode, fn));
    };

    // 当用户点击缩略图触发
    var onThumbnailsClick = function (e) {
      e = e || window.event;
      e.preventDefault ? e.preventDefault() : e.returnValue = false;
      var eTarget = e.target || e.srcElement;
      var clickedListItem = closest(eTarget, function (el) {
        return (el.tagName && el.tagName.toUpperCase() === 'FIGURE');
      });
      if (!clickedListItem) {
        return;
      }
      var clickedGallery = clickedListItem.parentNode,
        childNodes = clickedListItem.parentNode.childNodes,
        numChildNodes = childNodes.length,
        nodeIndex = 0,
        index;
      for (var i = 0; i < numChildNodes; i++) {
        if (childNodes[i].nodeType !== 1) {
          continue;
        }
        if (childNodes[i] === clickedListItem) {
          index = nodeIndex;
          break;
        }
        nodeIndex++;
      }
      if (index >= 0) {
        openPhotoSwipe(index, clickedGallery);
      }
      return false;
    };

    var photoswipeParseHash = function () {
      var hash = window.location.hash.substring(1),
        params = {};
      if (hash.length < 5) {
        return params;
      }
      var vars = hash.split('&');
      for (var i = 0; i < vars.length; i++) {
        if (!vars[i]) {
          continue;
        }
        var pair = vars[i].split('=');
        if (pair.length < 2) {
          continue;
        }
        params[pair[0]] = pair[1];
      }
      if (params.gid) {
        params.gid = parseInt(params.gid, 10);
      }
      return params;
    };

    var openPhotoSwipe = function (index, galleryElement, disableAnimation, fromURL) {
      var pswpElement = document.querySelectorAll('.pswp')[0],
        gallery,
        options,
        items;
      items = parseThumbnailElements(galleryElement);
      // 这里可以定义参数
      options = {
        barsSize: {
          top: 100,
          bottom: 100
        },
        fullscreenEl: false,
        shareButtons: [{
            id: 'wechat',
            label: '分享微信',
            url: '#'
          },
          {
            id: 'weibo',
            label: '新浪微博',
            url: '#'
          },
          {
            id: 'download',
            label: '保存图片',
            url: '{{raw_image_url}}',
            download: true
          }
        ],
        galleryUID: galleryElement.getAttribute('data-pswp-uid'),
        getThumbBoundsFn: function (index) {
          var thumbnail = items[index].el.getElementsByTagName('img')[0], // find thumbnail
            pageYScroll = window.pageYOffset || document.documentElement.scrollTop,
            rect = thumbnail.getBoundingClientRect();
          return {
            x: rect.left,
            y: rect.top + pageYScroll,
            w: rect.width
          };
        }
      };
      if (fromURL) {
        if (options.galleryPIDs) {
          for (var j = 0; j < items.length; j++) {
            if (items[j].pid == index) {
              options.index = j;
              break;
            }
          }
        } else {
          options.index = parseInt(index, 10) - 1;
        }
      } else {
        options.index = parseInt(index, 10);
      }
      if (isNaN(options.index)) {
        return;
      }
      if (disableAnimation) {
        options.showAnimationDuration = 0;
      }
      gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, options);
      gallery.init();
    };

    var galleryElements = document.querySelectorAll(gallerySelector);
    for (var i = 0, l = galleryElements.length; i < l; i++) {
      galleryElements[i].setAttribute('data-pswp-uid', i + 1);
      galleryElements[i].onclick = onThumbnailsClick;
    }
    var hashData = photoswipeParseHash();
    if (hashData.pid && hashData.gid) {
      openPhotoSwipe(hashData.pid, galleryElements[hashData.gid - 1], true, true);
    }
  };

  initPhotoSwipeFromDOM('.my-gallery');
</script>

</html>